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pc: acpi: create Processor and Notify objects only for valid lapics 

do not assume that all lapics in range 0..apic_id_limit
are valid and do not create Processor and Notify objects
for not possible lapics.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2016-02-26 14:59:25 +01:00 committed by Michael S. Tsirkin
parent 907e7c94d1
commit 2adba0a18a
1 changed files with 24 additions and 14 deletions
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38
hw/i386/acpi-build.c
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@ -965,7 +965,7 @@ static Aml *build_crs(PCIHostState *host,
return crs;
}
static void build_processor_devices(Aml *sb_scope, unsigned acpi_cpus,
static void build_processor_devices(Aml *sb_scope, MachineState *machine,
AcpiCpuInfo *cpu, AcpiPmInfo *pm)
{
int i;
@ -975,11 +975,14 @@ static void build_processor_devices(Aml *sb_scope, unsigned acpi_cpus,
Aml *field;
Aml *ifctx;
Aml *method;
MachineClass *mc = MACHINE_GET_CLASS(machine);
CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
PCMachineState *pcms = PC_MACHINE(machine);
/* The current AML generator can cover the APIC ID range [0..255],
* inclusive, for VCPU hotplug. */
QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
g_assert(pcms->apic_id_limit <= ACPI_CPU_HOTPLUG_ID_LIMIT);
/* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE));
@ -1004,22 +1007,26 @@ static void build_processor_devices(Aml *sb_scope, unsigned acpi_cpus,
aml_append(sb_scope, field);
/* build Processor object for each processor */
for (i = 0; i < acpi_cpus; i++) {
dev = aml_processor(i, 0, 0, "CP%.02X", i);
for (i = 0; i < apic_ids->len; i++) {
int apic_id = apic_ids->cpus[i].arch_id;
assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT);
dev = aml_processor(apic_id, 0, 0, "CP%.02X", apic_id);
method = aml_method("_MAT", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call1(CPU_MAT_METHOD, aml_int(i))));
aml_return(aml_call1(CPU_MAT_METHOD, aml_int(apic_id))));
aml_append(dev, method);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(i))));
aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(apic_id))));
aml_append(dev, method);
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(i), aml_arg(0)))
aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(apic_id),
aml_arg(0)))
);
aml_append(dev, method);
@ -1031,10 +1038,12 @@ static void build_processor_devices(Aml *sb_scope, unsigned acpi_cpus,
*/
/* Arg0 = Processor ID = APIC ID */
method = aml_method(AML_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
for (i = 0; i < acpi_cpus; i++) {
ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
for (i = 0; i < apic_ids->len; i++) {
int apic_id = apic_ids->cpus[i].arch_id;
ifctx = aml_if(aml_equal(aml_arg(0), aml_int(apic_id)));
aml_append(ifctx,
aml_notify(aml_name("CP%.02X", i), aml_arg(1))
aml_notify(aml_name("CP%.02X", apic_id), aml_arg(1))
);
aml_append(method, ifctx);
}
@ -1047,14 +1056,15 @@ static void build_processor_devices(Aml *sb_scope, unsigned acpi_cpus,
* ith up to 255 elements. Windows guests up to win2k8 fail when
* VarPackageOp is used.
*/
pkg = acpi_cpus <= 255 ? aml_package(acpi_cpus) :
aml_varpackage(acpi_cpus);
pkg = pcms->apic_id_limit <= 255 ? aml_package(pcms->apic_id_limit) :
aml_varpackage(pcms->apic_id_limit);
for (i = 0; i < acpi_cpus; i++) {
for (i = 0; i < pcms->apic_id_limit; i++) {
uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
aml_append(pkg, aml_int(b));
}
aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg));
g_free(apic_ids);
}
static void build_memory_devices(Aml *sb_scope, int nr_mem,
@ -2327,7 +2337,7 @@ build_dsdt(GArray *table_data, GArray *linker,
sb_scope = aml_scope("\\_SB");
{
build_processor_devices(sb_scope, pcms->apic_id_limit, cpu, pm);
build_processor_devices(sb_scope, machine, cpu, pm);
build_memory_devices(sb_scope, nr_mem, pm->mem_hp_io_base,
pm->mem_hp_io_len);